#4836
Sound is often an overlooked part in the process of making a game, but it can have a huge impact on the player experience. Sound can be direct recorded using either a microphone or connected instruments, but obviously using tools to create sound effects is much easier and more efficient. At the same time, having an excellent audio production tool in hand also plays a very important role in Game Jam competitions or game development processes.

#4835
sfxr (short for Sound Effects Rater) is a free and tiny sound effect quick generating tool specially designed for game developers, developed by Tomas Pettersson (DrPetter) from Sweden in the 10th Ludum Dare competition in 2007. As a procedural video game sound automatic generator for Windows, it's so popular that it has many code transplantation works on Mac, Linux, Web, ActionScript and iPhone, made by other developers.

#4667
XMPlay is a universal, free and portable music player developed by Un4seen Developments in 1998. It comes with tiny file size (less than 500 KB), compact and clear UI, powerful extensibility (skins, plugins, visuals and other add-ons), support to all popular audio formats, low memory usage, programmable music playback support, drag-and-drop operation support, complete keyboard shortcuts, and more. In short, it can compete with any premium music players, including foobar 2000 and Winamp.

#3680
FamiTracker is a professional but simple and easy-to-use 8-bit digital music producing freeware for NES/Famicom (FCDS) emulators. It comes with concise UI and powerful features, supports music import/export, automatically generates NSF file (so that the music you produce can be played in emulators), and is capable of converting music format. It's regarded as a must-have tool for many 8-bit game music producers.